CI: Switch to merge queue #525

	name: CI
	on:
	pull_request:
	merge_group:

	env:
	MDBOOK_VERSION: 0.4.40

	jobs:
	test:
	name: Test
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Update rustup
	run: rustup self update
	- name: Install Rust
	run: \|
	rustup set profile minimal
	rustup toolchain install nightly -c rust-docs
	rustup default nightly
	- name: Install mdbook
	run: \|
	mkdir bin
	curl -sSL https://github.com/rust-lang/mdBook/releases/download/v${MDBOOK_VERSION}/mdbook-v${MDBOOK_VERSION}-x86_64-unknown-linux-gnu.tar.gz \| tar -xz --directory=bin
	echo "$(pwd)/bin" >> $GITHUB_PATH
	- name: Report versions
	run: \|
	rustup --version
	rustc -Vv
	mdbook --version
	- name: Run tests
	run: mdbook test
	- name: Check for broken links
	run: \|
	curl -sSLo linkcheck.sh \
	https://raw.githubusercontent.com/rust-lang/rust/master/src/tools/linkchecker/linkcheck.sh
	sh linkcheck.sh --all nomicon

	# The success job is here to consolidate the total success/failure state of
	# all other jobs. This job is then included in the GitHub branch protection
	# rule which prevents merges unless all other jobs are passing. This makes
	# it easier to manage the list of jobs via this yml file and to prevent
	# accidentally adding new jobs without also updating the branch protections.
	success:
	name: Success gate
	if: always()
	needs:
	- test
	runs-on: ubuntu-latest
	steps:
	- run: jq --exit-status 'all(.result == "success")' <<< '${{ toJson(needs) }}'
	- name: Done
	run: exit 0

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